Where can I find an example of a client-server application (with source) that works with a database?

Question

Database

Help me find an example of a client-server application that works with a database.
Simple examples of client-server applications, such as chat rooms on the Internet, are heaps.
I am interested in an application that has:
1) Database on MySQL / PostgreSQL or any other relational DBMS
2) The server part of the application is short and works with the database
3) The client part of the application is short and communicates with the server part
The source codes can be in any programming language.

Answer 1

Yes, no question - https://www.phpmyadmin.net/
By the way, point 2 is not at all necessary: ​​DBMS provide a protocol for communication, the client can communicate via it directly.
if you want exactly desktop, then:
https://github.com/postgres/pgadmin4
https://github.com/sequelpro/sequelpro